Car-door operation



Sept. 27, 1927.

L. P. HYNES CAR DOOR OPERATION Filed May 1, 1925 \\\\\\\u I? r/// AATTOR N EY INVENTOR LEE P. HYNES l l l l l r l l l l .h- I I I l l l I Il Patented Sept. 27, 1927.

LEE P. HYNES, OF ALBANY, NEW YORK,

PATENT orFlce.

ASSIGNOR, BY MESNE ASSIGNMENTS, TO

CONSOLIDATED CAR-HEATING COMPANY, INC., OF ALBANY, NEW YORK, A GOR-IPORATION OF NEW YORK.

Application filed May 1,

For a detailed description of the present form of my invention,reference may be had to the following specification and to theaccompanying drawings forming a part thereof, wherein Fig. l is a frontview of my device partly in section; g

Figs. 2 and 3 show details;

F ig. 4 is a plan and Fig. 5 a side View.

My invention relates to apparatus, for operating car doors by anelectric motor through the intervention of a radial door arm. Thiscombination permits the motor to immeditely attain its normal constantspeed by reason of its high leverage advantage over the door at startingand to maintain such constant speed through the entire run of the doorwhile imparting to the door a gradual increasing speed from zero tomaximum followed'by a decreasing speed from maximum to Zero. Thiseliminates the need for resistance regulation of the motor, also theneed of checking agencies for the door, since the radial arm becomes-soto speaka mechanical regulator for the motor, compensating mechanically,instea'dof electrically, for the extra inertia-loadof the door atstopping and starting. I provide herein certain features of improvementin door apparatus of this type, including a simple form of clutchfordisconnecting the motor from the door to allow the door to be workedmanually.

Referring to the drawing, A represents the door with a channel B on itsrear edge wherein travels vertically a roller 0 on the outer end of aradial arm 0 on the arm shaft D. The shaft D is operated by the shaft Dthrough a clutch. Y is the motor. driving shaft D through the worm gearN and O O are limit switches operated by a bar 0' on shaft D at each endof its run. The arm C occupies the full-line position when the door isopen and the dotted line position when it is closed, the rear edge ofthe door occupying when open the position a and, when closed, theposition b. The arm C, when the door is open, is inclined upwardly fromthe shaft D and inclined downwardly therefrom when the door is closed,as appears in Fig. 1. By this means the door when closed is securelylocked by the arm which is of particular importance if the CAB-DOOROPERATION.

1925. Serial No. 27,268.

motor is unclutched from shaft D when the door might otherwise be arredopen. When the door is open the arm must be at or near the horizontal.Otherwise-it would be difficult to stop it against the base of the motorand its extension spring R might collapse suificiently to allow it topass the horizontal where it would come up again with a jerk and cause ashock to the mechanism. The

' angle of the door arm is positively determined, in each of the twopositions, by stops (Z and g on the base E of the motor. The shorterstop 9 is for the door-closed position and the longer stop (Z for thedoor-open position. Thus the run of the door is fixed independently 'ofany yielding of the door jamb or of any rubber filling onthe door-edgeabutting against the jamb. Moreover, a bar F is hinged at one end to thebase E of the motor and its free end has a cord or wire G secured toit'which passes over a pulley T on the door-frame near the top of thedoor and terminates in a handle by which the bar may be manually lifted.On the upper edge of bar F is a short projection 70 and a longerprojection f, these projections having offsets at their upper ends whichtake under the door arm C, the offset on shorter projection is when thearm is in its door-closed, and that on projection; when the arm is inits dooropen position. In eitherposition a pull on cord G will lift thearm from its locking position and so free the door for hand operbeingfree to slide longitudinally thereon.

The discs are separated by means of yokearms 39 and g which bear on theface'of disc J. The yoke and yoke-arms pivoted on the stationaryframework at h, h, are oper ated by a treadle P to separate the discsagainst the pressure of spring WV and when so operated a stud S on theyoke rides under a latch H and the discs are thereby locked apart. Thedoor can then be operated by hand independently of the motor, which mayat that time be disabled or not supplied with current. On the hub ofclutch-disc K is a cam projection M, which, when the motor is acondition.

. is open.

restarted will hit the tail of latch H and so release the yoke andpermit spring V to throw the clutch discs into engagement. Thus when itis desired to operate the door by hand it is ionly necessary to step ontreadle P. That will unclutch the door and motor and leave the clutchlatched in its open It will notbe necessaryto pay any further attentionto the clutch, for when the motor is started again it will automaticallyre-engage itself with the door.

The apparatus above described constitutes a simplified development ofthat shown in my pending application, No. 6,788, seriesof ,1925, filedFebruary 4th, 1925, and is particularly useful in an arrangement whereinthe shaft D is driven by the motor through a screw-gearing, as shownherein, and in my application aforesaid. Any other type of non-reactinggear may be used. In such :an "organization themanual operation, whenthe motor is disabled, is facilitated by the clutch .that disconnectsthe motor from the door, leaving the latter free to be moved by hand.

hat I claim as new and desire to secure by Letters Patent is; i U a V 1.A door operating mechanism comprising an electric motor, a door armoperated thereby and a manual clutch interposed between the door arm,and said motor, said door arm being set to assume an angle .with itsfree end below the horizontal when the door is closed so as to holdtheidoor locked 'while the motor is unclutched and to assume an angleabove the horizontal when the door 2. A door-operating mechanismcomprising an electric motor, aclutch, a door arm, and a lifter for thedoor-arm acting on the arm in either the closedor open position of thedoor. i l

3. A door-operating mechanism comprismg an electric motor, a clutch, adoor-arm and a lift-er for the door-armhaving engaging means atdifierent levels to engage the door-arm in either the open or closedposition of the door.

LA door-operating mechanism comprising an electric motor, a clutch, adoor-arm and stationary stops for the door-arm at different levels,

5. A do0r-0perating mechanism comprising an electric motor, a radialdoor-arm, a manual clutch between the motor and the door, a clutchoperating lever and a latch for locking the clutch operating lever inits di engaged condition, said latch being supported independently ofthe lever;

6. A door-operating mechanism comprisin an electric motor,a radialdoor-arm, a manualclutch between the motor and the door, a clutchoperating lever, a latch ior locking-the clutch in its disengaged condition, and motor-operated meansfor releasing the clutch.

7. door-operatingmechanism compris ing an electric motor, a radialdoorarm, a spring clutch between the motor, and the door, a pedalcontrolling the disengagement of the clutch, a latch for locking theclutch in its disengaged condition, and inotor-operstationary base foroperating the said movablemember, a latch for locking the movable memberin its disengaging position and mo- 9. A door-operating mechanismcomprismg an electric motor, a non-reversing between the a motor and thedoor, a, radial door-arm, stationary stops for each extreme position ofthe door-arm, a manual lifter for each of saiddoor-arm positions, amanual clutch between d0or-arm and themotor,a

spring-actuated lock for the clutch in its disand motor-actuatedconnected position,

means for releasing said lock;

Signed at Albany, county of Albany,

and State of New York, this 27 day of April,

l LEE RHYNES tor-operated means for releasing the clutch. l

